Results 151 to 160 of about 7,659,823 (254)

Motion planning and control of an installation robot for attitude adjustment of arc parts in underground shield tunneling

Deep Underground Science and Engineering, EarlyView.
Inspired by spiders, the multilegged walk‐through assembling robot for arc parts achieves high‐precision synchronous control under heavy loads through dual‐layer hydraulic pose dynamics modeling and hierarchical pressure optimization, significantly enhancing shield tunneling assembly efficiency and precision.
Quan Xiao, Guofei Xiang, Liang Liao, Lai Wei, Hongli Wang, Songyi Dian   +5 more
wiley   +1 more source

Intelligent Fracturing Equipment and Technology： Advances and Prospects

Shiyou jixie
As the development of unconventional oil and gas resources extends to deep and ultra-deep formations， the pressure， displacement， and operational complexity of hydraulic fracturing are intensifying.
Dai Qiping, Peng Junwei, Li Shuangpeng, Dong Fuqiang, Zhou Qing, Tian Chenyao   +5 more
doaj  

Leveraging remote sensing, geophysical methods and AHP model to determine optimal locations for green hydrogen production on Egypt's Mediterranean coast. [PDF]

Sci Rep
El Hateem YY, Diab AI, El-Sayed HM, El Maghraby MMS, Fahil AS.   +4 more
europepmc   +1 more source

Modeling and experimental validation of bolt–grout bond–slip behavior for deep underground excavation support

Deep Underground Science and Engineering, EarlyView.
A novel shear‐lag model, validated by pull‐out tests, incorporates a constant bond stress stage to predict the complete load–displacement response of grouted rock bolts, providing a new tool for optimizing anchorage length and material toughness in deep underground engineering. Abstract The stability of rock masses in deep underground excavations, such
Wenhui Bian, Xiaohui He, Kexue Wang, Yufei Wu, Guoxin Wang, Shaochen Zhang, Jun Yang   +6 more
wiley   +1 more source

From Exploration to Production: A Systematic Review of Natural Gas Hydrate Technologies. [PDF]

ACS Omega
Wang H, Li Z, Zhang H, Wang D, Gan B, Feng Z, Guo S.   +6 more
europepmc   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source

High-Throughput Sequencing Reveals Composition, Diversity, and Functional Prediction of Root-Associated Microbial Communities of Dominant Plants in an Ecologically Sensitive Area of the Loess Plateau. [PDF]

Microorganisms
Bai G, Tan Q, Han B, Li R, Gu L, Wang X, Zhang J, Li Y, Zhang Q.   +8 more
europepmc   +1 more source

Shock wave propagation characteristics of aluminum‐containing explosive in corrugated steel‐lined tunnel

Deep Underground Science and Engineering, EarlyView.
Aluminum‐enhanced afterburning renders AE explosives more hazardous than conventional ones. Corrugated steel linings reduce far‐field AE blast overpressure by ~50% through wave reflection and dissipation. The developed model accurately predicts peak pressure (<10% error) and arrival time (<3% error), supporting protective design.
Zhen Wang, Jiayu Peng, Hujun Li, Yuguo Ji, Shuobiao Li, Guokai Zhang   +5 more
wiley   +1 more source

Editorial: Efficient exploration and development of unconventional natural gas

Frontiers in Earth Science
Shu Tao, Zhengguang Zhang, Shida Chen, Yu Jing, Junjian Wang   +4 more
doaj   +1 more source

Calling for a GeoHealth Decadal Survey: Accelerating Solution-Oriented Research and Applications to Address Environmental and Health Problems. [PDF]

Geohealth
Tong DQ, Gorris ME, Abadi AM, Anenberg S, Ardon-Dryer K, Bratburd JR, Cromar K, Hang Y, Harp RD, Hoffman-Hall A, Horwell CJ, Kerr GH, Ma Y, Ryan SJ, Stowell JD, Usmani M, Wimberly MC, Zaitchik BF, Chen K.   +18 more
europepmc   +1 more source